e-licktronic Forum

I managed to get the bootloader flashed on to the atmega and can get step light leds to flash twice when turning on holding down 1,3 and 5...but can not upload the firmware. Step lights 1-8 do not flash indicating that it is being written. A couple of other unusual things are happening: LED 1-4 are no longer lit when I turn on the yocto. Is this normal? If I power up without holding down 1,3 and 5 sometimes all of the step lights are on and other times no/a few step lights are. It seems like something might be resetting internally because after about a minute or 2 if I press 1,3 and 5 I can get all the step lights to flash twice again. This seems like a problem to me.

Also, Last night I was trying to use the arduino to check voices following the instructions for doing so posted in forum. I couldn't get it to work. I could faintly hear what I assume was the pulse from the arduino but sounds were not triggering regardless of the module I checked. +5v and trigger were connected to the right spot just so you all know. STRANGE thing is, with an audio cable clipped to the output resistor of a sound, when turning the power off then on, I would hear the sound one time. Ive confirmed the bass drum, toms, cymbal, snare (but I get no noise sound at all) cowbell and CL HH work. OHH works but has a very short decay and sounds like the CLHH. Rimshot doesn't work but clav seems too...I also get a horrible pop sound when I switch between the 2 sounds. Clap doesn't work at all. I'm feeling determined to get this box working but could us some help.

ps. when I finished the kit I had 4 100uf 6.3v caps remaining...I've gone back through the parts list and it looks like the entire kit only uses 4 100uf 6.3v caps or am I missing something?

Check your soldering in the sequencer section I could not upload sysex then I found I had not soldered in a couple of chips in the sequencer section , I built it ever so carefully but even so made that silly mistake ,

I had sounds missing turned out to be the ribbon cables had broken

thanks for reply. im currently going through the whole sequencer.

I ended up getting my arduino to trigger sounds...I didn't realize you also had to have the yocto plugged in as well as the other things. Good news is the rim shot works and Im getting noise with my snare...the ohh still has very little decay and just sounds like a louder slightly longer version of the clhh. Oh the joys of diy!!

I found and fixed the problem and have resolved 90% of my issues. Ic4 wasn't seated flush against the circuit board. Desoldered it, added a socket and seated the chip. Sysex worked and burned the firmware. All voices are function except for the clap. I cn also hear heat a faint hollow hi pitched oscillation from the clave. All in all a satisfied customer. Thanks!

If your clap doesn't work and you tried to test it with an arduino, you've busted Q28 because there's a fault in the silkscreen
concerning R103.

Have a look at this topic to clarify: viewtopic.php?f=16&t=287